Power conversion device

Abstract

A power conversion device includes a multiphase power conversion circuit, a plurality of bus bars which are arranged adjacent to each other, phase currents of the multiphase power conversion circuit flowing through the plurality of bus bars, respectively, a single current sensor configured to detect any of the phase currents in the plurality of bus bars, and a housing which houses the multiphase power conversion circuit, the plurality of bus bars and the current sensor, in which the current sensor includes a magnetic core through which the plurality of bus bars are inserted such that flow directions of the phase currents are the same direction, and which has a single magnetic gap, and a Hall element inserted in the magnetic gap.

What is claimed is: 
     
       1. A power conversion device comprising:
 a multiphase power conversion circuit; 
 a plurality of bus bars which are arranged adjacent to each other, phase currents of the multiphase power conversion circuit flowing through the plurality of bus bars, respectively; 
 a single current sensor configured to detect any of the phase currents in the plurality of bus bars; and 
 a housing which houses the multiphase power conversion circuit, the plurality of bus bars and the current sensor, 
 wherein the current sensor includes: 
 a magnetic core through which the plurality of bus bars are inserted such that flow directions of the phase currents are the same direction, and which has a single magnetic gap; and 
 a Hall element inserted in the magnetic gap. 
 
     
     
       2. The power conversion device according to  claim 1 ,
 wherein the magnetic core and the Hall element are provided in the housing such that the positional relationship of the Hall element with respect to the magnetic gap is visible. 
 
     
     
       3. The power conversion device according to  claim 1 ,
 wherein the housing has an insertion hole into which the Hall element is inserted from one side, the position of the insertion hole corresponding to the magnetic gap, and 
 the one side of the insertion hole is formed in a tapered shape. 
 
     
     
       4. The power conversion device according to  claim 1 , further comprising
 a spacer inserted between the plurality of bus bars and configured to maintain a constant distance between the plurality of bus bars. 
 
     
     
       5. The power conversion device according to  claim 1 ,
 wherein a positioning marker configured to assist with positioning of the Hall elements is provided in the housing.